Former "Game of Thrones" hunk Jason Momoa took his man muscles down to Rio de Janeiro ... reminding us why he's the perfect choice to play Aquaman.

Karrueche Tran is a single woman -- at least until she gets back together with Chris Brown for the umpteenth time -- but in the meantime, she's flaunting her single body all over Miami.

It's not hard to see why Chris kept going back.

If there's one thing the Internet knows ... it's that Kate Upton in a bikini (and sometimes out of it) is an easy win -- and the folks at Sports Illustrated just rung up another W.

Kate's been getting a ton of attention for her "Game of War" commercials, which seemingly runs during every commercial break of sporting events.

So, S.I. just wanted to remind everyone they have the hottest Upton footage on the planet ... by posting a throwback video to a 2012 photoshoot.

Thank you, S.I.

Topless photos and videos of Anastasia Ashley are out there somewhere ... after a crook made off with a laptop containing all the revealing footage ... TMZ Sports has learned.

Sources tell us the laptop was snatched from a camera crew that had recently done a photoshoot with Ashley in Palm Beach, FL for Cheeki underwear. We're told someone broke into their van ... and stole a ton of photo equipment, including the laptop.

Ashley posed nearly nude (g-string only) at times ... but the edited final product was only supposed to imply she was naked.

Ashley tells TMZ Sports ... "There's video of me posing in compromising positions from all kinds of angles." She says the raw footage was never supposed to be seen ... but now she's worried about where it will end up.

We're told the crew filed a report with Miami Beach PD.

Ashley says the theft is "a big invasion of privacy. I'll be mortified if they get released."

Miley Cyrus donned a silver wig to match her silver pasties when she showed up Wednesday night to perform at Art Basel in Miami ... with BF Patrick Schwarzenegger in tow.

Miley performed mostly covers -- Led Zeppelin, The Beatles, Johnny Cash -- and mocked her own music, saying, "You thought (Art Basel) was a respected place where you could escape me."

One thing's for sure ... the Kennedys are having fun conversations today.

Actress/singer Zoe Kravitz donned what barely qualifies as a bikini as she frolicked in the ocean ... Wednesday in Miami.

Blake Lively doesn't need a sexy black dress for slimming effect -- 'cause even with a big ole bun in her oven ... she's a total smoke show.

The ex "Gossip Girl" flaunted her belly at a L'Oreal event in NYC last night ... creating a dilemma for all those fans who drooled over her bod long before Ryan Reynolds knocked her up about 5-6 months ago.

Kourtney Kardashian had the stomach to pose naked for Dujuor magazine.

Kourtney -- who is ready to pop with her third kid -- tried to one up Kim. When you break it down limb by limb ... she really looks amazing ... shades of Demi Moore.

Your move, Khloe.

Cara Delevingne got something way better than a trophy at the British Fashion Awards ... she got a ton of action.

Nearly every photo of Cara -- now officially the World's Greatest Party Guest -- shows her all over a bunch of celebs. We won't spoil all of her encounters, but it seems Rihanna and Kendall Jenner were her favorite targets.

Tara Reid appears to be on a liquid diet, but she also eats a lot, and thinks all the talk that she's got an eating disorder is ridiculous.

Tara is taking a lot of flack after posting a pic of her looking uber thin. But on her way out of Craig's, Tara tried describing what she says is her healthy appetite for grub.

Problem is ... Tara can barely string her sentences together.

Watch your back, Kim ... Khloe is coming for you.

Khloe Kardashian continued her all out assault on her sister's claim to the most colossal culo in Calabasas ... as she was spotted leaving a private gym Tuesday afternoon.

The spandex-clad profile is oddly similar to the one Kim showed off just a few months back.

The question is ...

Robin Thicke's nude girlfriend likes being ... nude.

April Love Geary is only 19 ... she couldn't even do this legally until a year ago. Butt clearly she couldn't wait to bare arms, and legs and ...

We got our hands on modeling pics April took with famed photographer Neave Bozorgi, who has an eye for very hot young women.

First Beckham, then Ronaldo ... now ANOTHER soccer star is getting into the men's underwear game - James Rodriguez.

The Colombian superstar who plays for Real Madrid stripped down to his man panties to model his new line of undies, J10 ... made by a Colombian underwear company Bronzini.

Seems to be a total ripoff of Cristiano Ronaldo's undie-brand CR7 ... which started as an underwear line and was so successful, it's already expanded into socks and shirts.

BTW, James and Ronaldo both play for the same team -- so, it's kinda like the Oklahoma City Thunder situation ... where teammates Kevin Durant and Russell Westbrook also have competing underwear lines.